My Inquiry
My Account
Texas Instruments TPS54140QDGQRQ1
- Part No.:
- TPS54140QDGQRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS54140QDGQRQ1.pdf
- Description:
- IC REG BUCK ADJ 1.5A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,887
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS54140QDGQRQ1 from Texas Instruments is an automotive-grade 42-V, 1.5-A synchronous step-down DC/DC converter with integrated 200-mΩ high-side MOSFET, 0.8-V internal reference, Eco-mode™ pulse-skipping control, and 116-μA quiescent current. It delivers regulated 3.3-V or 5-V outputs for infotainment power rails in 12-V/24-V vehicle systems.
For engineers reviewing the TPS54140QDGQRQ1 datasheet, TPS54140QDGQRQ1 pinout, TPS54140QDGQRQ1 application, or TPS54140QDGQRQ1 equivalent, key selection criteria include input voltage range (3.5–42 V), switching frequency programmability (100 kHz–2.5 MHz), thermal shutdown (182°C), PWRGD accuracy (±8% VSENSE window), and MSOP PowerPAD™ package thermal performance (θJA = 62.5°C/W).
Technical Context
This current-mode buck regulator uses a fixed-frequency PWM controller with slope compensation to prevent subharmonic oscillation across 0–100% duty cycle. Its transconductance error amplifier (97 μA/V) compares VSENSE against either the 0.8-V internal reference or SS/TR voltage, enabling precise output tracking and sequencing.
The RT/CLK pin supports dual-mode operation: resistor-set frequency (100–2500 kHz) or external clock synchronization via PLL lock (100 μs typical). BOOT-PH UVLO (2.1 V threshold) enables 100% duty-cycle operation during dropout, while Eco-mode™ reduces light-load quiescent current to 116 μA without compromising regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5 V to 42 V - supports direct connection to automotive battery rails including cold-crank (4.6 V) and load-dump (42 V) transients. |
| Output Current | 1.5 A continuous - sufficient for powering DSPs, microcontrollers, and display drivers in automotive accessories. |
| Switching Frequency | 100 kHz to 2.5 MHz - adjustable via RT resistor or external clock; higher frequencies reduce inductor size but increase switching loss. |
| Quiescent Current | 116 μA - enables always-on functionality in low-power infotainment modules without excessive battery drain. |
| Reference Voltage | 0.8 V ±2% - sets output voltage via external resistor divider; stable over –40°C to 150°C junction temperature. |
| Power-Good Window | 92% to 109% of VOUT - open-drain PWRGD asserts low outside this band, supporting system-level fault detection and sequencing. |
| Thermal Shutdown | 182°C - protects device during overload or poor PCB thermal design; auto-recovery after cooldown. |
Pinout & Package
TPS54140QDGQRQ1 is housed in a thermally enhanced 10-pin MSOP PowerPAD™ package (DGQ), where the exposed thermal pad must be soldered to a PCB ground plane for optimal thermal performance (θJB = 28°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply rail | Accepts 3.5–42 V; requires bulk and ceramic input capacitors for transient suppression and high-frequency decoupling. |
| GND | Power and signal reference | Common return path; must connect directly to thermal pad and minimize impedance to reduce noise coupling. |
| BOOT | High-side gate drive supply | Connects to PH via 0.1-μF X7R/X5R ceramic capacitor; UVLO disables HS-FET if BOOT-PH drops below 2.1 V. |
| VSENSE | Error amplifier inverting input | Monitors output via resistor divider; regulates to 0.8 V reference or lower SS/TR voltage for tracking. |
| COMP | Error amplifier output | Drives external RC compensation network; transconductance = 97 μA/V for stable loop response. |
| EN | Enable control with UVLO adjustment | Pulled up internally (0.9 μA); disable by pulling below 1.25 V; supports hysteresis via external resistors. |
| RT/CLK | Frequency setting or sync input | Resistor-to-ground sets fSW (100–2500 kHz); external clock edges trigger PLL mode for system-wide timing alignment. |
| SS/TR | Slow-start and tracking control | Capacitor sets soft-start time; voltage override enables power sequencing with other rails or reference tracking. |
| PWRGD | Open-drain power-good indicator | Asserts low when VSENSE is outside 92–109% window; requires external pull-up for logic-level signaling. |
| PH | Switch node | Connects to inductor and BOOT capacitor; high dv/dt node requiring tight layout and minimized trace length. |
Key Features
| Feature | Design Value |
|---|---|
| Eco-mode™ pulse skipping | Maintains >85% efficiency at 10-mA load by reducing switching frequency and gate drive loss while preserving regulation. |
| Adjustable undervoltage lockout | Configurable start/stop thresholds (e.g., 6 V start / 4.5 V stop) using two external resistors on EN pin with 50-mV hysteresis. |
| Integrated boot recharge diode | Eliminates external diode; reduces BOM count and improves reliability in space-constrained automotive modules. |
| 1.3-μA shutdown current | Enables deep-sleep modes in telematics units; meets ISO 16750-2 quiescent current requirements for parked vehicles. |
| Thermal foldback protection | Reduces switching frequency during overtemperature events to limit power dissipation before thermal shutdown triggers. |
Applications
| Automotive Infotainment Power | Industrial 24-V Field Bus Node |
|---|---|
|
Use Scenario: Powering LCD display controllers and audio codecs in rear-seat entertainment systems. IC Role / Device Role / Timing Role: Primary 3.3-V buck regulator delivering 1.2 A with PWRGD monitoring for system reset coordination. Use Value: 116-μA quiescent current prevents battery drain during vehicle off-state; Eco-mode maintains efficiency across variable video/audio loads. |
Use Scenario: Supplying isolated I/O modules in factory automation PLCs powered from 24-V DC bus. IC Role / Device Role / Timing Role: Step-down regulator generating 5-V logic rail with RT/CLK synchronization to central controller clock. Use Value: 42-V max input withstands 24-V bus transients; MSOP PowerPAD™ package ensures thermal stability in enclosed enclosures. |
| Aftermarket GPS Tracker | Automotive Camera Module |
|
Use Scenario: Compact GPS navigation unit drawing intermittent current from vehicle cigarette lighter (12-V nominal). IC Role / Device Role / Timing Role: Single-chip 3.3-V supply with SS/TR-controlled startup to avoid brownout during ignition cranking. Use Value: Adjustable UVLO prevents false turn-off during cold-crank dips; 1.5-A rating supports burst-mode GNSS acquisition current peaks. |
Use Scenario: Front-facing ADAS camera requiring clean, low-noise 1.8-V and 2.8-V rails from 12-V battery. IC Role / Device Role / Timing Role: First-stage buck converting 12 V to 3.3 V, followed by LDOs; PWRGD signals FPGA readiness to sensor interface. Use Value: 0.8-V reference enables accurate multi-rail generation; ±2% VREF tolerance ensures consistent image sensor biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5140QQRGRRQ1 | 42-V, 2-A dual-channel synchronous buck with current sharing; higher current, larger QFN package (16-pin), no Eco-mode. | Used in multi-rail ADAS ECUs requiring parallel output stages; lacks pulse-skipping for ultra-low IQ. | Select LM5140QQRGRRQ1 when >1.5-A output or channel paralleling is required; TPS54140QDGQRQ1 preferred for cost-sensitive single-rail designs. |
| MPQ4313-AEC1 | 42-V, 1.2-A buck with 25-μA IQ; smaller 8-pin SOIC package; fixed 500-kHz fSW; no RT/CLK sync capability. | Suitable for space-constrained telematics modules where clock synchronization is unnecessary. | Choose MPQ4313-AEC1 for minimal footprint and lowest standby current; TPS54140QDGQRQ1 offers wider fSW range and sequencing flexibility. |
Compared with LM5140QQRGRRQ1 and MPQ4313-AEC1, TPS54140QDGQRQ1 uniquely balances 1.5-A capability, 116-μA light-load IQ, programmable frequency, and SS/TR-based power sequencing-making it optimal for mid-tier automotive accessories where thermal, size, and feature trade-offs must be tightly controlled.
Availability
TPS54140QDGQRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, industrial 24-V field nodes, aftermarket GPS trackers, and ADAS camera modules requiring stable component supply across extended temperature and lifecycle demands.
Supply support for TPS54140QDGQRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive ICs, with decades of AEC-Q100 qualification expertise and broad power management portfolio.
TPS54140QDGQRQ1 belongs to TI's SWIFT™ family of high-voltage DC/DC converters designed specifically for automotive and industrial power systems demanding wide VIN range, high efficiency at light loads, and robust fault protection.
FAQ
What is the maximum input voltage rating for TPS54140QDGQRQ1?
The TPS54140QDGQRQ1 has an absolute maximum input voltage rating of 47 V, with recommended operating range from 3.5 V to 42 V. This allows direct connection to automotive 12-V and 24-V battery systems, including transient conditions like load dump (up to 42 V per ISO 7637-2) and cold-crank (down to 3.5 V). Exceeding 42 V continuously risks exceeding safe operating area limits.
How does the Eco-mode™ function improve efficiency in TPS54140QDGQRQ1?
Eco-mode™ in the TPS54140QDGQRQ1 activates pulse-skipping at light loads, reducing switching frequency and gate drive losses while maintaining output regulation. At no load, this lowers quiescent current to 116 μA-critical for always-on automotive modules. The minimum clamp on the COMP pin enables sleep-mode entry without sacrificing transient response or output accuracy.
Can TPS54140QDGQRQ1 synchronize to an external clock, and how is it configured?
Yes, TPS54140QDGQRQ1 supports external clock synchronization via its RT/CLK pin. When driven with a TTL/CMOS clock signal above the 1.9-V high threshold, the internal oscillator disables and PLL locks to the external edge (typically falling edge) within 100 μs. This eliminates beat frequencies in multi-regulator systems and enables deterministic timing in synchronized power domains.
What thermal considerations apply to the MSOP PowerPAD™ package of TPS54140QDGQRQ1?
The TPS54140QDGQRQ1 DGQ package requires the exposed thermal pad to be soldered to a dedicated PCB ground plane with ≥6 thermal vias (13-mil diameter) for optimal heat transfer. With this layout, junction-to-board thermal resistance is 28°C/W. Without proper pad connection, θJA degrades from 62.5°C/W to >100°C/W, risking thermal shutdown under 1.5-A load at 85°C ambient.
How is output voltage accuracy maintained across temperature in TPS54140QDGQRQ1?
The TPS54140QDGQRQ1 uses a precision bandgap-derived 0.8-V reference with ±2% tolerance over –40°C to 150°C junction temperature. This reference feeds the error amplifier, ensuring output voltage setpoint stability regardless of thermal drift. Combined with low VSENSE input bias current (50 nA), it enables <1% total output error with 1% resistor dividers across full operating range.
TPS54140QDGQRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Eco-Mode™
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 39V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 100kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-HVSSOP
TPS54140QDGQRQ1 FAQ
1.How can I place an order for TPS54140QDGQRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54140QDGQRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS54140QDGQRQ1 reliable?
The price and inventory of TPS54140QDGQRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54140QDGQRQ1 is usually 5 days.
3.What payment methods are accepted for TPS54140QDGQRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54140QDGQRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54140QDGQRQ1?
TPS54140QDGQRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54140QDGQRQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS54140QDGQRQ1?
For technical support, including TPS54140QDGQRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54140QDGQRQ1 requirements.
6.How does Aetrix verify that TPS54140QDGQRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS54140QDGQRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS54140QDGQRQ1 meets industry standards.
7.What is the process for return or replacement of TPS54140QDGQRQ1?
All TPS54140QDGQRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54140QDGQRQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS54140QDGQRQ1 part is unused and in its original packaging.
Return procedure for TPS54140QDGQRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS54140QDGQRQ1 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
